throb_animation.h

// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.// Use of this source code is governed by a BSD-style license that can be// found in the LICENSE file.#ifndef APP_THROB_ANIMATION_H_#define APP_THROB_ANIMATION_H_#include "app/slide_animation.h"// A subclass of SlideAnimation that can continually slide. All of the Animation// methods behave like that of SlideAnimation: transition to the next state.// The StartThrobbing method causes the ThrobAnimation to cycle between hidden// and shown for a set number of cycles.//// A ThrobAnimation has two durations: the duration used when behavior like// a SlideAnimation, and the duration used when throbbing.class ThrobAnimation : public SlideAnimation {
public:
explicit ThrobAnimation(AnimationDelegate* target);
virtual ~ThrobAnimation() {}
// Starts throbbing. cycles_til_stop gives the number of cycles to do before// stopping.void StartThrobbing(int cycles_til_stop);
// Sets the duration of the slide animation when throbbing.void SetThrobDuration(int duration) { throb_duration_ = duration; }
// Overridden to reset to the slide duration.virtualvoid Reset();
virtualvoid Show();
virtualvoid Hide();
// Overridden to maintain the slide duration.virtualvoid SetSlideDuration(int duration) { slide_duration_ = duration; }
// The number of cycles remaining until the animation stops.void set_cycles_remaining(int value) { cycles_remaining_ = value; }
int cycles_remaining() const { return cycles_remaining_; }
protected:
// Overriden to continually throb (assuming we're throbbing).virtualvoid Step(base::TimeTicks time_now);
private:
// Resets state such that we behave like SlideAnimation.void ResetForSlide();
// Duration of the slide animation.int slide_duration_;
// Duration of the slide animation when throbbing.int throb_duration_;
// If throbbing, this is the number of cycles left.int cycles_remaining_;
// Are we throbbing?bool throbbing_;
DISALLOW_COPY_AND_ASSIGN(ThrobAnimation);
};
#endif // APP_THROB_ANIMATION_H_